地球引力

Saw in the outer space when Earth's rising tide and ebb tide saw the Earth was is actually pulled flatly by the attraction.

在太空看到地球的涨潮和退潮时看到的地球其实是被引力拉扁了的。

The force of gravity on the moon is much less than on the earth .

月球的引力比地球上的引力小得多。

People weigh less on the moon because the moons force of gravity is less than that of the earth.

人在月球上重量要轻些，因为月球的引力小于地球的引力。

The size of the Earth's gravitational attraction is based on a reference share, and the quality of the produce!

地球的引力大小是以某一引力参照物的比重、质量产生而产生的！

Tides are caused by slight variations in gravitational attraction between the Earth and the Moon and the Sun in geometric relationship with locations on the earth's surface.

潮汐的产生，是由於地球，月球和太阳之间的的几何位置关系在地球表面造成的轻微的引力变化。

But we do not notice the gravitational pull of a book because the pull of the earth is very much greater.

我们觉察不到一本书的引力是因为地球的引力要大得多的缘故。

To fly to the solar system space probes to other planets whose flight can be roughly divided into three stages, namely, from launch to the Earth's scope is not out of phase, out of the scope of the Earth's role in the transition phase, when mainly affected by solar gravity and scope to the target planet is the first three-phase, after which the planet could be captured by the target satellite, or left the target planet became the man-made asteroid.

飞往太阳系其他行星的空间探测器其飞行大致可分为三个阶段，即从发射到未脱离地球作用范围阶段，脱离地球作用范围的过渡阶段，这时主要受太阳引力作用，进入目标行星作用范围是第三阶段，此后可能成为被目标行星俘获的卫星，或者飞离目标行星后成为人造小行星。

In classicaIn classical hydrogen atom model an electron is circling around the nucleus like Earth revolving around the sun, except that the force between the l hydrogen atom model an electron is circling around the nucleus like Earth revolving around the sun, except that the force between the two electron

在经典的氢原子模型里，电子绕着原子核作圆周运动，在经典的氢原子模型里，电子绕著原子核作圆周运动，就象地球绕太阳运动一样就就像像地球绕太阳运动一样地球绕太阳运动一样，，只只是前者的是前者的而其引力来自电场。

The gravity on the surface of Mars is about one third as strong as it is on earth.

火星表面的引力大约是地球表面引力的三分之一。

The gravity on the surface of Mars is about one third as strong as it is on the earth.

火星表面的引力大约是地球表面引力的三分之一。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。